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Efficient communication system using time division multiplexing and timing adjustment control

  • US 6,366,566 B1
  • Filed: 07/08/1999
  • Issued: 04/02/2002
  • Est. Priority Date: 06/05/1995
  • Status: Expired due to Term
First Claim
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1. A system for communication comprising a base station, a plurality of user stations, and a transmission format;

  • said transmission format comprising a plurality of time frames of equal duration, each of said time frames comprising a base transmission portion, a collective guard portion, and a user transmission portion, said collective guard portion located between said base transmission portion and said user transmission portion, each base transmission portion comprised of a plurality of base time slots and each user transmission portion comprised of a plurality of user time slots;

    said base station comprising the capability to transmit a plurality of sub-messages in each of said base time slots of said base transmission portion of a time frame, each said sub-message transmitted in a base time slot transmitted to a different user station, and in which one or more sub-messages from a plurality of base time slots of a time frame comprises a base-to-user message for a user station; and

    a user station of said plurality of user stations comprising the capability to transmit a user-to-base message in a user time slot of said user transmission portion of a time frame.

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